git.maemo.org Git - wpasupplicant/blob - wpa_supplicant/ctrl_iface.c

   1 /*
   2  * WPA Supplicant / Control interface (shared code for all backends)
   3  * Copyright (c) 2004-2008, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eloop.h"
  19 #include "wpa.h"
  20 #include "config.h"
  21 #include "eapol_supp/eapol_supp_sm.h"
  22 #include "wpa_supplicant_i.h"
  23 #include "ctrl_iface.h"
  24 #include "l2_packet/l2_packet.h"
  25 #include "preauth.h"
  26 #include "pmksa_cache.h"
  27 #include "wpa_ctrl.h"
  28 #include "eap_peer/eap.h"
  29 #include "ieee802_11_defs.h"
  30 #include "wps_supplicant.h"
  31 #include "wps/wps.h"
  32 #include "ibss_rsn.h"
  33
  34 static int wpa_supplicant_global_iface_list(struct wpa_global *global,
  35                                             char *buf, int len);
  36 static int wpa_supplicant_global_iface_interfaces(struct wpa_global *global,
  37                                                   char *buf, int len);
  38
  39
  40 static int wpa_supplicant_ctrl_iface_set(struct wpa_supplicant *wpa_s,
  41                                          char *cmd)
  42 {
  43         char *value;
  44         int ret = 0;
  45
  46         value = os_strchr(cmd, ' ');
  47         if (value == NULL)
  48                 return -1;
  49         *value++ = '\0';
  50
  51         wpa_printf(MSG_DEBUG, "CTRL_IFACE SET '%s'='%s'", cmd, value);
  52         if (os_strcasecmp(cmd, "EAPOL::heldPeriod") == 0) {
  53                 eapol_sm_configure(wpa_s->eapol,
  54                                    atoi(value), -1, -1, -1);
  55         } else if (os_strcasecmp(cmd, "EAPOL::authPeriod") == 0) {
  56                 eapol_sm_configure(wpa_s->eapol,
  57                                    -1, atoi(value), -1, -1);
  58         } else if (os_strcasecmp(cmd, "EAPOL::startPeriod") == 0) {
  59                 eapol_sm_configure(wpa_s->eapol,
  60                                    -1, -1, atoi(value), -1);
  61         } else if (os_strcasecmp(cmd, "EAPOL::maxStart") == 0) {
  62                 eapol_sm_configure(wpa_s->eapol,
  63                                    -1, -1, -1, atoi(value));
  64         } else if (os_strcasecmp(cmd, "dot11RSNAConfigPMKLifetime") == 0) {
  65                 if (wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
  66                                      atoi(value)))
  67                         ret = -1;
  68         } else if (os_strcasecmp(cmd, "dot11RSNAConfigPMKReauthThreshold") ==
  69                    0) {
  70                 if (wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
  71                                      atoi(value)))
  72                         ret = -1;
  73         } else if (os_strcasecmp(cmd, "dot11RSNAConfigSATimeout") == 0) {
  74                 if (wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT, atoi(value)))
  75                         ret = -1;
  76         } else
  77                 ret = -1;
  78
  79         return ret;
  80 }
  81
  82
  83 #ifdef IEEE8021X_EAPOL
  84 static int wpa_supplicant_ctrl_iface_preauth(struct wpa_supplicant *wpa_s,
  85                                              char *addr)
  86 {
  87         u8 bssid[ETH_ALEN];
  88         struct wpa_ssid *ssid = wpa_s->current_ssid;
  89
  90         if (hwaddr_aton(addr, bssid)) {
  91                 wpa_printf(MSG_DEBUG, "CTRL_IFACE PREAUTH: invalid address "
  92                            "'%s'", addr);
  93                 return -1;
  94         }
  95
  96         wpa_printf(MSG_DEBUG, "CTRL_IFACE PREAUTH " MACSTR, MAC2STR(bssid));
  97         rsn_preauth_deinit(wpa_s->wpa);
  98         if (rsn_preauth_init(wpa_s->wpa, bssid, ssid ? &ssid->eap : NULL))
  99                 return -1;
 100
 101         return 0;
 102 }
 103 #endif /* IEEE8021X_EAPOL */
 104
 105
 106 #ifdef CONFIG_PEERKEY
 107 /* MLME-STKSTART.request(peer) */
 108 static int wpa_supplicant_ctrl_iface_stkstart(
 109         struct wpa_supplicant *wpa_s, char *addr)
 110 {
 111         u8 peer[ETH_ALEN];
 112
 113         if (hwaddr_aton(addr, peer)) {
 114                 wpa_printf(MSG_DEBUG, "CTRL_IFACE STKSTART: invalid "
 115                            "address '%s'", peer);
 116                 return -1;
 117         }
 118
 119         wpa_printf(MSG_DEBUG, "CTRL_IFACE STKSTART " MACSTR,
 120                    MAC2STR(peer));
 121
 122         return wpa_sm_stkstart(wpa_s->wpa, peer);
 123 }
 124 #endif /* CONFIG_PEERKEY */
 125
 126
 127 #ifdef CONFIG_IEEE80211R
 128 static int wpa_supplicant_ctrl_iface_ft_ds(
 129         struct wpa_supplicant *wpa_s, char *addr)
 130 {
 131         u8 target_ap[ETH_ALEN];
 132
 133         if (hwaddr_aton(addr, target_ap)) {
 134                 wpa_printf(MSG_DEBUG, "CTRL_IFACE FT_DS: invalid "
 135                            "address '%s'", target_ap);
 136                 return -1;
 137         }
 138
 139         wpa_printf(MSG_DEBUG, "CTRL_IFACE FT_DS " MACSTR, MAC2STR(target_ap));
 140
 141         return wpa_ft_start_over_ds(wpa_s->wpa, target_ap);
 142 }
 143 #endif /* CONFIG_IEEE80211R */
 144
 145
 146 #ifdef CONFIG_WPS
 147 static int wpa_supplicant_ctrl_iface_wps_pbc(struct wpa_supplicant *wpa_s,
 148                                              char *cmd)
 149 {
 150         u8 bssid[ETH_ALEN];
 151
 152         if (cmd == NULL || os_strcmp(cmd, "any") == 0)
 153                 return wpas_wps_start_pbc(wpa_s, NULL);
 154
 155         if (hwaddr_aton(cmd, bssid)) {
 156                 wpa_printf(MSG_DEBUG, "CTRL_IFACE WPS_PBC: invalid BSSID '%s'",
 157                            cmd);
 158                 return -1;
 159         }
 160
 161         return wpas_wps_start_pbc(wpa_s, bssid);
 162 }
 163
 164
 165 static int wpa_supplicant_ctrl_iface_wps_pin(struct wpa_supplicant *wpa_s,
 166                                              char *cmd, char *buf,
 167                                              size_t buflen)
 168 {
 169         u8 bssid[ETH_ALEN], *_bssid = bssid;
 170         char *pin;
 171         int ret;
 172
 173         pin = os_strchr(cmd, ' ');
 174         if (pin)
 175                 *pin++ = '\0';
 176
 177         if (os_strcmp(cmd, "any") == 0)
 178                 _bssid = NULL;
 179         else if (hwaddr_aton(cmd, bssid)) {
 180                 wpa_printf(MSG_DEBUG, "CTRL_IFACE WPS_PIN: invalid BSSID '%s'",
 181                            cmd);
 182                 return -1;
 183         }
 184
 185         if (pin) {
 186                 ret = wpas_wps_start_pin(wpa_s, _bssid, pin);
 187                 if (ret < 0)
 188                         return -1;
 189                 ret = os_snprintf(buf, buflen, "%s", pin);
 190                 if (ret < 0 || (size_t) ret >= buflen)
 191                         return -1;
 192                 return ret;
 193         }
 194
 195         ret = wpas_wps_start_pin(wpa_s, _bssid, NULL);
 196         if (ret < 0)
 197                 return -1;
 198
 199         /* Return the generated PIN */
 200         ret = os_snprintf(buf, buflen, "%08d", ret);
 201         if (ret < 0 || (size_t) ret >= buflen)
 202                 return -1;
 203         return ret;
 204 }
 205
 206
 207 static int wpa_supplicant_ctrl_iface_wps_reg(struct wpa_supplicant *wpa_s,
 208                                              char *cmd)
 209 {
 210         u8 bssid[ETH_ALEN], *_bssid = bssid;
 211         char *pin;
 212
 213         pin = os_strchr(cmd, ' ');
 214         if (pin == NULL)
 215                 return -1;
 216         *pin++ = '\0';
 217
 218         if (os_strcmp(cmd, "any") == 0)
 219                 _bssid = NULL;
 220         else if (hwaddr_aton(cmd, bssid)) {
 221                 wpa_printf(MSG_DEBUG, "CTRL_IFACE WPS_REG: invalid BSSID '%s'",
 222                            cmd);
 223                 return -1;
 224         }
 225
 226         return wpas_wps_start_reg(wpa_s, _bssid, pin);
 227 }
 228 #endif /* CONFIG_WPS */
 229
 230
 231 #ifdef CONFIG_IBSS_RSN
 232 static int wpa_supplicant_ctrl_iface_ibss_rsn(
 233         struct wpa_supplicant *wpa_s, char *addr)
 234 {
 235         u8 peer[ETH_ALEN];
 236
 237         if (hwaddr_aton(addr, peer)) {
 238                 wpa_printf(MSG_DEBUG, "CTRL_IFACE IBSS_RSN: invalid "
 239                            "address '%s'", peer);
 240                 return -1;
 241         }
 242
 243         wpa_printf(MSG_DEBUG, "CTRL_IFACE IBSS_RSN " MACSTR,
 244                    MAC2STR(peer));
 245
 246         return ibss_rsn_start(wpa_s->ibss_rsn, peer);
 247 }
 248 #endif /* CONFIG_IBSS_RSN */
 249
 250
 251 static int wpa_supplicant_ctrl_iface_ctrl_rsp(struct wpa_supplicant *wpa_s,
 252                                               char *rsp)
 253 {
 254 #ifdef IEEE8021X_EAPOL
 255         char *pos, *id_pos;
 256         int id;
 257         struct wpa_ssid *ssid;
 258         struct eap_peer_config *eap;
 259
 260         pos = os_strchr(rsp, '-');
 261         if (pos == NULL)
 262                 return -1;
 263         *pos++ = '\0';
 264         id_pos = pos;
 265         pos = os_strchr(pos, ':');
 266         if (pos == NULL)
 267                 return -1;
 268         *pos++ = '\0';
 269         id = atoi(id_pos);
 270         wpa_printf(MSG_DEBUG, "CTRL_IFACE: field=%s id=%d", rsp, id);
 271         wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: value",
 272                               (u8 *) pos, os_strlen(pos));
 273
 274         ssid = wpa_config_get_network(wpa_s->conf, id);
 275         if (ssid == NULL) {
 276                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find SSID id=%d "
 277                            "to update", id);
 278                 return -1;
 279         }
 280         eap = &ssid->eap;
 281
 282         if (os_strcmp(rsp, "IDENTITY") == 0) {
 283                 os_free(eap->identity);
 284                 eap->identity = (u8 *) os_strdup(pos);
 285                 eap->identity_len = os_strlen(pos);
 286                 eap->pending_req_identity = 0;
 287                 if (ssid == wpa_s->current_ssid)
 288                         wpa_s->reassociate = 1;
 289         } else if (os_strcmp(rsp, "PASSWORD") == 0) {
 290                 os_free(eap->password);
 291                 eap->password = (u8 *) os_strdup(pos);
 292                 eap->password_len = os_strlen(pos);
 293                 eap->pending_req_password = 0;
 294                 if (ssid == wpa_s->current_ssid)
 295                         wpa_s->reassociate = 1;
 296         } else if (os_strcmp(rsp, "NEW_PASSWORD") == 0) {
 297                 os_free(eap->new_password);
 298                 eap->new_password = (u8 *) os_strdup(pos);
 299                 eap->new_password_len = os_strlen(pos);
 300                 eap->pending_req_new_password = 0;
 301                 if (ssid == wpa_s->current_ssid)
 302                         wpa_s->reassociate = 1;
 303         } else if (os_strcmp(rsp, "PIN") == 0) {
 304                 os_free(eap->pin);
 305                 eap->pin = os_strdup(pos);
 306                 eap->pending_req_pin = 0;
 307                 if (ssid == wpa_s->current_ssid)
 308                         wpa_s->reassociate = 1;
 309         } else if (os_strcmp(rsp, "OTP") == 0) {
 310                 os_free(eap->otp);
 311                 eap->otp = (u8 *) os_strdup(pos);
 312                 eap->otp_len = os_strlen(pos);
 313                 os_free(eap->pending_req_otp);
 314                 eap->pending_req_otp = NULL;
 315                 eap->pending_req_otp_len = 0;
 316         } else if (os_strcmp(rsp, "PASSPHRASE") == 0) {
 317                 os_free(eap->private_key_passwd);
 318                 eap->private_key_passwd = (u8 *) os_strdup(pos);
 319                 eap->pending_req_passphrase = 0;
 320                 if (ssid == wpa_s->current_ssid)
 321                         wpa_s->reassociate = 1;
 322         } else {
 323                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown field '%s'", rsp);
 324                 return -1;
 325         }
 326
 327         return 0;
 328 #else /* IEEE8021X_EAPOL */
 329         wpa_printf(MSG_DEBUG, "CTRL_IFACE: 802.1X not included");
 330         return -1;
 331 #endif /* IEEE8021X_EAPOL */
 332 }
 333
 334
 335 static int wpa_supplicant_ctrl_iface_status(struct wpa_supplicant *wpa_s,
 336                                             const char *params,
 337                                             char *buf, size_t buflen)
 338 {
 339         char *pos, *end, tmp[30];
 340         int res, verbose, ret;
 341
 342         verbose = os_strcmp(params, "-VERBOSE") == 0;
 343         pos = buf;
 344         end = buf + buflen;
 345         if (wpa_s->wpa_state >= WPA_ASSOCIATED) {
 346                 struct wpa_ssid *ssid = wpa_s->current_ssid;
 347                 ret = os_snprintf(pos, end - pos, "bssid=" MACSTR "\n",
 348                                   MAC2STR(wpa_s->bssid));
 349                 if (ret < 0 || ret >= end - pos)
 350                         return pos - buf;
 351                 pos += ret;
 352                 if (ssid) {
 353                         u8 *_ssid = ssid->ssid;
 354                         size_t ssid_len = ssid->ssid_len;
 355                         u8 ssid_buf[MAX_SSID_LEN];
 356                         if (ssid_len == 0) {
 357                                 int _res = wpa_drv_get_ssid(wpa_s, ssid_buf);
 358                                 if (_res < 0)
 359                                         ssid_len = 0;
 360                                 else
 361                                         ssid_len = _res;
 362                                 _ssid = ssid_buf;
 363                         }
 364                         ret = os_snprintf(pos, end - pos, "ssid=%s\nid=%d\n",
 365                                           wpa_ssid_txt(_ssid, ssid_len),
 366                                           ssid->id);
 367                         if (ret < 0 || ret >= end - pos)
 368                                 return pos - buf;
 369                         pos += ret;
 370
 371                         if (ssid->id_str) {
 372                                 ret = os_snprintf(pos, end - pos,
 373                                                   "id_str=%s\n",
 374                                                   ssid->id_str);
 375                                 if (ret < 0 || ret >= end - pos)
 376                                         return pos - buf;
 377                                 pos += ret;
 378                         }
 379                 }
 380
 381                 pos += wpa_sm_get_status(wpa_s->wpa, pos, end - pos, verbose);
 382         }
 383         ret = os_snprintf(pos, end - pos, "wpa_state=%s\n",
 384                           wpa_supplicant_state_txt(wpa_s->wpa_state));
 385         if (ret < 0 || ret >= end - pos)
 386                 return pos - buf;
 387         pos += ret;
 388
 389         if (wpa_s->l2 &&
 390             l2_packet_get_ip_addr(wpa_s->l2, tmp, sizeof(tmp)) >= 0) {
 391                 ret = os_snprintf(pos, end - pos, "ip_address=%s\n", tmp);
 392                 if (ret < 0 || ret >= end - pos)
 393                         return pos - buf;
 394                 pos += ret;
 395         }
 396
 397         if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
 398             wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 399                 res = eapol_sm_get_status(wpa_s->eapol, pos, end - pos,
 400                                           verbose);
 401                 if (res >= 0)
 402                         pos += res;
 403         }
 404
 405         res = rsn_preauth_get_status(wpa_s->wpa, pos, end - pos, verbose);
 406         if (res >= 0)
 407                 pos += res;
 408
 409         return pos - buf;
 410 }
 411
 412
 413 static int wpa_supplicant_ctrl_iface_bssid(struct wpa_supplicant *wpa_s,
 414                                            char *cmd)
 415 {
 416         char *pos;
 417         int id;
 418         struct wpa_ssid *ssid;
 419         u8 bssid[ETH_ALEN];
 420
 421         /* cmd: "<network id> <BSSID>" */
 422         pos = os_strchr(cmd, ' ');
 423         if (pos == NULL)
 424                 return -1;
 425         *pos++ = '\0';
 426         id = atoi(cmd);
 427         wpa_printf(MSG_DEBUG, "CTRL_IFACE: id=%d bssid='%s'", id, pos);
 428         if (hwaddr_aton(pos, bssid)) {
 429                 wpa_printf(MSG_DEBUG ,"CTRL_IFACE: invalid BSSID '%s'", pos);
 430                 return -1;
 431         }
 432
 433         ssid = wpa_config_get_network(wpa_s->conf, id);
 434         if (ssid == NULL) {
 435                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find SSID id=%d "
 436                            "to update", id);
 437                 return -1;
 438         }
 439
 440         os_memcpy(ssid->bssid, bssid, ETH_ALEN);
 441         ssid->bssid_set = !is_zero_ether_addr(bssid);
 442
 443         return 0;
 444 }
 445
 446
 447 static int wpa_supplicant_ctrl_iface_list_networks(
 448         struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
 449 {
 450         char *pos, *end;
 451         struct wpa_ssid *ssid;
 452         int ret;
 453
 454         pos = buf;
 455         end = buf + buflen;
 456         ret = os_snprintf(pos, end - pos,
 457                           "network id / ssid / bssid / flags\n");
 458         if (ret < 0 || ret >= end - pos)
 459                 return pos - buf;
 460         pos += ret;
 461
 462         ssid = wpa_s->conf->ssid;
 463         while (ssid) {
 464                 ret = os_snprintf(pos, end - pos, "%d\t%s",
 465                                   ssid->id,
 466                                   wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
 467                 if (ret < 0 || ret >= end - pos)
 468                         return pos - buf;
 469                 pos += ret;
 470                 if (ssid->bssid_set) {
 471                         ret = os_snprintf(pos, end - pos, "\t" MACSTR,
 472                                           MAC2STR(ssid->bssid));
 473                 } else {
 474                         ret = os_snprintf(pos, end - pos, "\tany");
 475                 }
 476                 if (ret < 0 || ret >= end - pos)
 477                         return pos - buf;
 478                 pos += ret;
 479                 ret = os_snprintf(pos, end - pos, "\t%s%s",
 480                                   ssid == wpa_s->current_ssid ?
 481                                   "[CURRENT]" : "",
 482                                   ssid->disabled ? "[DISABLED]" : "");
 483                 if (ret < 0 || ret >= end - pos)
 484                         return pos - buf;
 485                 pos += ret;
 486                 ret = os_snprintf(pos, end - pos, "\n");
 487                 if (ret < 0 || ret >= end - pos)
 488                         return pos - buf;
 489                 pos += ret;
 490
 491                 ssid = ssid->next;
 492         }
 493
 494         return pos - buf;
 495 }
 496
 497
 498 static char * wpa_supplicant_cipher_txt(char *pos, char *end, int cipher)
 499 {
 500         int first = 1, ret;
 501         ret = os_snprintf(pos, end - pos, "-");
 502         if (ret < 0 || ret >= end - pos)
 503                 return pos;
 504         pos += ret;
 505         if (cipher & WPA_CIPHER_NONE) {
 506                 ret = os_snprintf(pos, end - pos, "%sNONE", first ? "" : "+");
 507                 if (ret < 0 || ret >= end - pos)
 508                         return pos;
 509                 pos += ret;
 510                 first = 0;
 511         }
 512         if (cipher & WPA_CIPHER_WEP40) {
 513                 ret = os_snprintf(pos, end - pos, "%sWEP40", first ? "" : "+");
 514                 if (ret < 0 || ret >= end - pos)
 515                         return pos;
 516                 pos += ret;
 517                 first = 0;
 518         }
 519         if (cipher & WPA_CIPHER_WEP104) {
 520                 ret = os_snprintf(pos, end - pos, "%sWEP104",
 521                                   first ? "" : "+");
 522                 if (ret < 0 || ret >= end - pos)
 523                         return pos;
 524                 pos += ret;
 525                 first = 0;
 526         }
 527         if (cipher & WPA_CIPHER_TKIP) {
 528                 ret = os_snprintf(pos, end - pos, "%sTKIP", first ? "" : "+");
 529                 if (ret < 0 || ret >= end - pos)
 530                         return pos;
 531                 pos += ret;
 532                 first = 0;
 533         }
 534         if (cipher & WPA_CIPHER_CCMP) {
 535                 ret = os_snprintf(pos, end - pos, "%sCCMP", first ? "" : "+");
 536                 if (ret < 0 || ret >= end - pos)
 537                         return pos;
 538                 pos += ret;
 539                 first = 0;
 540         }
 541         return pos;
 542 }
 543
 544
 545 static char * wpa_supplicant_ie_txt(char *pos, char *end, const char *proto,
 546                                     const u8 *ie, size_t ie_len)
 547 {
 548         struct wpa_ie_data data;
 549         int first, ret;
 550
 551         ret = os_snprintf(pos, end - pos, "[%s-", proto);
 552         if (ret < 0 || ret >= end - pos)
 553                 return pos;
 554         pos += ret;
 555
 556         if (wpa_parse_wpa_ie(ie, ie_len, &data) < 0) {
 557                 ret = os_snprintf(pos, end - pos, "?]");
 558                 if (ret < 0 || ret >= end - pos)
 559                         return pos;
 560                 pos += ret;
 561                 return pos;
 562         }
 563
 564         first = 1;
 565         if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X) {
 566                 ret = os_snprintf(pos, end - pos, "%sEAP", first ? "" : "+");
 567                 if (ret < 0 || ret >= end - pos)
 568                         return pos;
 569                 pos += ret;
 570                 first = 0;
 571         }
 572         if (data.key_mgmt & WPA_KEY_MGMT_PSK) {
 573                 ret = os_snprintf(pos, end - pos, "%sPSK", first ? "" : "+");
 574                 if (ret < 0 || ret >= end - pos)
 575                         return pos;
 576                 pos += ret;
 577                 first = 0;
 578         }
 579         if (data.key_mgmt & WPA_KEY_MGMT_WPA_NONE) {
 580                 ret = os_snprintf(pos, end - pos, "%sNone", first ? "" : "+");
 581                 if (ret < 0 || ret >= end - pos)
 582                         return pos;
 583                 pos += ret;
 584                 first = 0;
 585         }
 586 #ifdef CONFIG_IEEE80211R
 587         if (data.key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) {
 588                 ret = os_snprintf(pos, end - pos, "%sFT/EAP",
 589                                   first ? "" : "+");
 590                 if (ret < 0 || ret >= end - pos)
 591                         return pos;
 592                 pos += ret;
 593                 first = 0;
 594         }
 595         if (data.key_mgmt & WPA_KEY_MGMT_FT_PSK) {
 596                 ret = os_snprintf(pos, end - pos, "%sFT/PSK",
 597                                   first ? "" : "+");
 598                 if (ret < 0 || ret >= end - pos)
 599                         return pos;
 600                 pos += ret;
 601                 first = 0;
 602         }
 603 #endif /* CONFIG_IEEE80211R */
 604 #ifdef CONFIG_IEEE80211W
 605         if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) {
 606                 ret = os_snprintf(pos, end - pos, "%sEAP-SHA256",
 607                                   first ? "" : "+");
 608                 if (ret < 0 || ret >= end - pos)
 609                         return pos;
 610                 pos += ret;
 611                 first = 0;
 612         }
 613         if (data.key_mgmt & WPA_KEY_MGMT_PSK_SHA256) {
 614                 ret = os_snprintf(pos, end - pos, "%sPSK-SHA256",
 615                                   first ? "" : "+");
 616                 if (ret < 0 || ret >= end - pos)
 617                         return pos;
 618                 pos += ret;
 619                 first = 0;
 620         }
 621 #endif /* CONFIG_IEEE80211W */
 622
 623         pos = wpa_supplicant_cipher_txt(pos, end, data.pairwise_cipher);
 624
 625         if (data.capabilities & WPA_CAPABILITY_PREAUTH) {
 626                 ret = os_snprintf(pos, end - pos, "-preauth");
 627                 if (ret < 0 || ret >= end - pos)
 628                         return pos;
 629                 pos += ret;
 630         }
 631
 632         ret = os_snprintf(pos, end - pos, "]");
 633         if (ret < 0 || ret >= end - pos)
 634                 return pos;
 635         pos += ret;
 636
 637         return pos;
 638 }
 639
 640 static char * wpa_supplicant_wps_ie_txt(char *pos, char *end,
 641                                         const struct wpa_scan_res *res)
 642 {
 643 #ifdef CONFIG_WPS
 644         struct wpabuf *wps_ie;
 645         int ret;
 646         const char *txt;
 647
 648         wps_ie = wpa_scan_get_vendor_ie_multi(res, WPS_IE_VENDOR_TYPE);
 649         if (wps_ie == NULL)
 650                 return pos;
 651
 652         if (wps_is_selected_pbc_registrar(wps_ie))
 653                 txt = "[WPS-PBC]";
 654         else if (wps_is_selected_pin_registrar(wps_ie))
 655                 txt = "[WPS-PIN]";
 656         else
 657                 txt = "[WPS]";
 658
 659         ret = os_snprintf(pos, end - pos, "%s", txt);
 660         if (ret >= 0 && ret < end - pos)
 661                 pos += ret;
 662         wpabuf_free(wps_ie);
 663 #endif /* CONFIG_WPS */
 664
 665         return pos;
 666 }
 667
 668
 669 /* Format one result on one text line into a buffer. */
 670 static int wpa_supplicant_ctrl_iface_scan_result(
 671         const struct wpa_scan_res *res, char *buf, size_t buflen)
 672 {
 673         char *pos, *end;
 674         int ret;
 675         const u8 *ie, *ie2;
 676
 677         pos = buf;
 678         end = buf + buflen;
 679
 680         ret = os_snprintf(pos, end - pos, MACSTR "\t%d\t%d\t",
 681                           MAC2STR(res->bssid), res->freq, res->level);
 682         if (ret < 0 || ret >= end - pos)
 683                 return pos - buf;
 684         pos += ret;
 685         ie = wpa_scan_get_vendor_ie(res, WPA_IE_VENDOR_TYPE);
 686         if (ie)
 687                 pos = wpa_supplicant_ie_txt(pos, end, "WPA", ie, 2 + ie[1]);
 688         ie2 = wpa_scan_get_ie(res, WLAN_EID_RSN);
 689         if (ie2)
 690                 pos = wpa_supplicant_ie_txt(pos, end, "WPA2", ie2, 2 + ie2[1]);
 691         pos = wpa_supplicant_wps_ie_txt(pos, end, res);
 692         if (!ie && !ie2 && res->caps & IEEE80211_CAP_PRIVACY) {
 693                 ret = os_snprintf(pos, end - pos, "[WEP]");
 694                 if (ret < 0 || ret >= end - pos)
 695                         return pos - buf;
 696                 pos += ret;
 697         }
 698         if (res->caps & IEEE80211_CAP_IBSS) {
 699                 ret = os_snprintf(pos, end - pos, "[IBSS]");
 700                 if (ret < 0 || ret >= end - pos)
 701                         return pos - buf;
 702                 pos += ret;
 703         }
 704
 705         ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 706         ret = os_snprintf(pos, end - pos, "\t%s",
 707                           ie ? wpa_ssid_txt(ie + 2, ie[1]) : "");
 708         if (ret < 0 || ret >= end - pos)
 709                 return pos - buf;
 710         pos += ret;
 711
 712         ret = os_snprintf(pos, end - pos, "\n");
 713         if (ret < 0 || ret >= end - pos)
 714                 return pos - buf;
 715         pos += ret;
 716
 717         return pos - buf;
 718 }
 719
 720
 721 static int wpa_supplicant_ctrl_iface_scan_results(
 722         struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
 723 {
 724         char *pos, *end;
 725         struct wpa_scan_res *res;
 726         int ret;
 727         size_t i;
 728
 729         if (wpa_s->scan_res == NULL &&
 730             wpa_supplicant_get_scan_results(wpa_s) < 0)
 731                 return 0;
 732
 733         pos = buf;
 734         end = buf + buflen;
 735         ret = os_snprintf(pos, end - pos, "bssid / frequency / signal level / "
 736                           "flags / ssid\n");
 737         if (ret < 0 || ret >= end - pos)
 738                 return pos - buf;
 739         pos += ret;
 740
 741         for (i = 0; i < wpa_s->scan_res->num; i++) {
 742                 res = wpa_s->scan_res->res[i];
 743                 ret = wpa_supplicant_ctrl_iface_scan_result(res, pos,
 744                                                             end - pos);
 745                 if (ret < 0 || ret >= end - pos)
 746                         return pos - buf;
 747                 pos += ret;
 748         }
 749
 750         return pos - buf;
 751 }
 752
 753
 754 static int wpa_supplicant_ctrl_iface_select_network(
 755         struct wpa_supplicant *wpa_s, char *cmd)
 756 {
 757         int id;
 758         struct wpa_ssid *ssid;
 759
 760         /* cmd: "<network id>" or "any" */
 761         if (os_strcmp(cmd, "any") == 0) {
 762                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: SELECT_NETWORK any");
 763                 ssid = wpa_s->conf->ssid;
 764                 while (ssid) {
 765                         ssid->disabled = 0;
 766                         ssid = ssid->next;
 767                 }
 768                 wpa_s->reassociate = 1;
 769                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 770                 return 0;
 771         }
 772
 773         id = atoi(cmd);
 774         wpa_printf(MSG_DEBUG, "CTRL_IFACE: SELECT_NETWORK id=%d", id);
 775
 776         ssid = wpa_config_get_network(wpa_s->conf, id);
 777         if (ssid == NULL) {
 778                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
 779                            "id=%d", id);
 780                 return -1;
 781         }
 782
 783         if (ssid != wpa_s->current_ssid && wpa_s->current_ssid)
 784                 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 785
 786         /* Mark all other networks disabled and trigger reassociation */
 787         ssid = wpa_s->conf->ssid;
 788         while (ssid) {
 789                 ssid->disabled = id != ssid->id;
 790                 ssid = ssid->next;
 791         }
 792         wpa_s->reassociate = 1;
 793         wpa_supplicant_req_scan(wpa_s, 0, 0);
 794
 795         return 0;
 796 }
 797
 798
 799 static int wpa_supplicant_ctrl_iface_enable_network(
 800         struct wpa_supplicant *wpa_s, char *cmd)
 801 {
 802         int id;
 803         struct wpa_ssid *ssid;
 804
 805         /* cmd: "<network id>" or "all" */
 806         if (os_strcmp(cmd, "all") == 0) {
 807                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: ENABLE_NETWORK all");
 808                 ssid = wpa_s->conf->ssid;
 809                 while (ssid) {
 810                         if (ssid == wpa_s->current_ssid && ssid->disabled)
 811                                 wpa_s->reassociate = 1;
 812                         ssid->disabled = 0;
 813                         ssid = ssid->next;
 814                 }
 815                 if (wpa_s->reassociate)
 816                         wpa_supplicant_req_scan(wpa_s, 0, 0);
 817                 return 0;
 818         }
 819
 820         id = atoi(cmd);
 821         wpa_printf(MSG_DEBUG, "CTRL_IFACE: ENABLE_NETWORK id=%d", id);
 822
 823         ssid = wpa_config_get_network(wpa_s->conf, id);
 824         if (ssid == NULL) {
 825                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
 826                            "id=%d", id);
 827                 return -1;
 828         }
 829
 830         if (wpa_s->current_ssid == NULL && ssid->disabled) {
 831                 /*
 832                  * Try to reassociate since there is no current configuration
 833                  * and a new network was made available. */
 834                 wpa_s->reassociate = 1;
 835                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 836         }
 837         ssid->disabled = 0;
 838
 839         return 0;
 840 }
 841
 842
 843 static int wpa_supplicant_ctrl_iface_disable_network(
 844         struct wpa_supplicant *wpa_s, char *cmd)
 845 {
 846         int id;
 847         struct wpa_ssid *ssid;
 848
 849         /* cmd: "<network id>" or "all" */
 850         if (os_strcmp(cmd, "all") == 0) {
 851                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: DISABLE_NETWORK all");
 852                 ssid = wpa_s->conf->ssid;
 853                 while (ssid) {
 854                         ssid->disabled = 1;
 855                         ssid = ssid->next;
 856                 }
 857                 if (wpa_s->current_ssid)
 858                         wpa_supplicant_disassociate(wpa_s,
 859                                                     WLAN_REASON_DEAUTH_LEAVING);
 860                 return 0;
 861         }
 862
 863         id = atoi(cmd);
 864         wpa_printf(MSG_DEBUG, "CTRL_IFACE: DISABLE_NETWORK id=%d", id);
 865
 866         ssid = wpa_config_get_network(wpa_s->conf, id);
 867         if (ssid == NULL) {
 868                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
 869                            "id=%d", id);
 870                 return -1;
 871         }
 872
 873         if (ssid == wpa_s->current_ssid)
 874                 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 875         ssid->disabled = 1;
 876
 877         return 0;
 878 }
 879
 880
 881 static int wpa_supplicant_ctrl_iface_add_network(
 882         struct wpa_supplicant *wpa_s, char *buf, size_t buflen)
 883 {
 884         struct wpa_ssid *ssid;
 885         int ret;
 886
 887         wpa_printf(MSG_DEBUG, "CTRL_IFACE: ADD_NETWORK");
 888
 889         ssid = wpa_config_add_network(wpa_s->conf);
 890         if (ssid == NULL)
 891                 return -1;
 892         ssid->disabled = 1;
 893         wpa_config_set_network_defaults(ssid);
 894
 895         ret = os_snprintf(buf, buflen, "%d\n", ssid->id);
 896         if (ret < 0 || (size_t) ret >= buflen)
 897                 return -1;
 898         return ret;
 899 }
 900
 901
 902 static int wpa_supplicant_ctrl_iface_remove_network(
 903         struct wpa_supplicant *wpa_s, char *cmd)
 904 {
 905         int id;
 906         struct wpa_ssid *ssid;
 907
 908         /* cmd: "<network id>" or "all" */
 909         if (os_strcmp(cmd, "all") == 0) {
 910                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: REMOVE_NETWORK all");
 911                 ssid = wpa_s->conf->ssid;
 912                 while (ssid) {
 913                         id = ssid->id;
 914                         ssid = ssid->next;
 915                         wpa_config_remove_network(wpa_s->conf, id);
 916                 }
 917                 if (wpa_s->current_ssid) {
 918                         eapol_sm_invalidate_cached_session(wpa_s->eapol);
 919                         wpa_supplicant_disassociate(wpa_s,
 920                                                     WLAN_REASON_DEAUTH_LEAVING);
 921                 }
 922                 return 0;
 923         }
 924
 925         id = atoi(cmd);
 926         wpa_printf(MSG_DEBUG, "CTRL_IFACE: REMOVE_NETWORK id=%d", id);
 927
 928         ssid = wpa_config_get_network(wpa_s->conf, id);
 929         if (ssid == NULL ||
 930             wpa_config_remove_network(wpa_s->conf, id) < 0) {
 931                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
 932                            "id=%d", id);
 933                 return -1;
 934         }
 935
 936         if (ssid == wpa_s->current_ssid) {
 937                 /*
 938                  * Invalidate the EAP session cache if the current network is
 939                  * removed.
 940                  */
 941                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 942
 943                 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
 944         }
 945
 946         return 0;
 947 }
 948
 949
 950 static int wpa_supplicant_ctrl_iface_set_network(
 951         struct wpa_supplicant *wpa_s, char *cmd)
 952 {
 953         int id;
 954         struct wpa_ssid *ssid;
 955         char *name, *value;
 956
 957         /* cmd: "<network id> <variable name> <value>" */
 958         name = os_strchr(cmd, ' ');
 959         if (name == NULL)
 960                 return -1;
 961         *name++ = '\0';
 962
 963         value = os_strchr(name, ' ');
 964         if (value == NULL)
 965                 return -1;
 966         *value++ = '\0';
 967
 968         id = atoi(cmd);
 969         wpa_printf(MSG_DEBUG, "CTRL_IFACE: SET_NETWORK id=%d name='%s'",
 970                    id, name);
 971         wpa_hexdump_ascii_key(MSG_DEBUG, "CTRL_IFACE: value",
 972                               (u8 *) value, os_strlen(value));
 973
 974         ssid = wpa_config_get_network(wpa_s->conf, id);
 975         if (ssid == NULL) {
 976                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
 977                            "id=%d", id);
 978                 return -1;
 979         }
 980
 981         if (wpa_config_set(ssid, name, value, 0) < 0) {
 982                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Failed to set network "
 983                            "variable '%s'", name);
 984                 return -1;
 985         }
 986
 987         if (wpa_s->current_ssid == ssid) {
 988                 /*
 989                  * Invalidate the EAP session cache if anything in the current
 990                  * configuration changes.
 991                  */
 992                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 993         }
 994
 995         if ((os_strcmp(name, "psk") == 0 &&
 996              value[0] == '"' && ssid->ssid_len) ||
 997             (os_strcmp(name, "ssid") == 0 && ssid->passphrase))
 998                 wpa_config_update_psk(ssid);
 999
1000         return 0;
1001 }
1002
1003
1004 static int wpa_supplicant_ctrl_iface_get_network(
1005         struct wpa_supplicant *wpa_s, char *cmd, char *buf, size_t buflen)
1006 {
1007         int id;
1008         size_t res;
1009         struct wpa_ssid *ssid;
1010         char *name, *value;
1011
1012         /* cmd: "<network id> <variable name>" */
1013         name = os_strchr(cmd, ' ');
1014         if (name == NULL || buflen == 0)
1015                 return -1;
1016         *name++ = '\0';
1017
1018         id = atoi(cmd);
1019         wpa_printf(MSG_DEBUG, "CTRL_IFACE: GET_NETWORK id=%d name='%s'",
1020                    id, name);
1021
1022         ssid = wpa_config_get_network(wpa_s->conf, id);
1023         if (ssid == NULL) {
1024                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Could not find network "
1025                            "id=%d", id);
1026                 return -1;
1027         }
1028
1029         value = wpa_config_get_no_key(ssid, name);
1030         if (value == NULL) {
1031                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: Failed to get network "
1032                            "variable '%s'", name);
1033                 return -1;
1034         }
1035
1036         res = os_strlcpy(buf, value, buflen);
1037         if (res >= buflen) {
1038                 os_free(value);
1039                 return -1;
1040         }
1041
1042         os_free(value);
1043
1044         return res;
1045 }
1046
1047
1048 #ifndef CONFIG_NO_CONFIG_WRITE
1049 static int wpa_supplicant_ctrl_iface_save_config(struct wpa_supplicant *wpa_s)
1050 {
1051         int ret;
1052
1053         if (!wpa_s->conf->update_config) {
1054                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: SAVE_CONFIG - Not allowed "
1055                            "to update configuration (update_config=0)");
1056                 return -1;
1057         }
1058
1059         ret = wpa_config_write(wpa_s->confname, wpa_s->conf);
1060         if (ret) {
1061                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: SAVE_CONFIG - Failed to "
1062                            "update configuration");
1063         } else {
1064                 wpa_printf(MSG_DEBUG, "CTRL_IFACE: SAVE_CONFIG - Configuration"
1065                            " updated");
1066         }
1067
1068         return ret;
1069 }
1070 #endif /* CONFIG_NO_CONFIG_WRITE */
1071
1072
1073 static int ctrl_iface_get_capability_pairwise(int res, char *strict,
1074                                               struct wpa_driver_capa *capa,
1075                                               char *buf, size_t buflen)
1076 {
1077         int ret, first = 1;
1078         char *pos, *end;
1079         size_t len;
1080
1081         pos = buf;
1082         end = pos + buflen;
1083
1084         if (res < 0) {
1085                 if (strict)
1086                         return 0;
1087                 len = os_strlcpy(buf, "CCMP TKIP NONE", buflen);
1088                 if (len >= buflen)
1089                         return -1;
1090                 return len;
1091         }
1092
1093         if (capa->enc & WPA_DRIVER_CAPA_ENC_CCMP) {
1094                 ret = os_snprintf(pos, end - pos, "%sCCMP", first ? "" : " ");
1095                 if (ret < 0 || ret >= end - pos)
1096                         return pos - buf;
1097                 pos += ret;
1098                 first = 0;
1099         }
1100
1101         if (capa->enc & WPA_DRIVER_CAPA_ENC_TKIP) {
1102                 ret = os_snprintf(pos, end - pos, "%sTKIP", first ? "" : " ");
1103                 if (ret < 0 || ret >= end - pos)
1104                         return pos - buf;
1105                 pos += ret;
1106                 first = 0;
1107         }
1108
1109         if (capa->key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA_NONE) {
1110                 ret = os_snprintf(pos, end - pos, "%sNONE", first ? "" : " ");
1111                 if (ret < 0 || ret >= end - pos)
1112                         return pos - buf;
1113                 pos += ret;
1114                 first = 0;
1115         }
1116
1117         return pos - buf;
1118 }
1119
1120
1121 static int ctrl_iface_get_capability_group(int res, char *strict,
1122                                            struct wpa_driver_capa *capa,
1123                                            char *buf, size_t buflen)
1124 {
1125         int ret, first = 1;
1126         char *pos, *end;
1127         size_t len;
1128
1129         pos = buf;
1130         end = pos + buflen;
1131
1132         if (res < 0) {
1133                 if (strict)
1134                         return 0;
1135                 len = os_strlcpy(buf, "CCMP TKIP WEP104 WEP40", buflen);
1136                 if (len >= buflen)
1137                         return -1;
1138                 return len;
1139         }
1140
1141         if (capa->enc & WPA_DRIVER_CAPA_ENC_CCMP) {
1142                 ret = os_snprintf(pos, end - pos, "%sCCMP", first ? "" : " ");
1143                 if (ret < 0 || ret >= end - pos)
1144                         return pos - buf;
1145                 pos += ret;
1146                 first = 0;
1147         }
1148
1149         if (capa->enc & WPA_DRIVER_CAPA_ENC_TKIP) {
1150                 ret = os_snprintf(pos, end - pos, "%sTKIP", first ? "" : " ");
1151                 if (ret < 0 || ret >= end - pos)
1152                         return pos - buf;
1153                 pos += ret;
1154                 first = 0;
1155         }
1156
1157         if (capa->enc & WPA_DRIVER_CAPA_ENC_WEP104) {
1158                 ret = os_snprintf(pos, end - pos, "%sWEP104",
1159                                   first ? "" : " ");
1160                 if (ret < 0 || ret >= end - pos)
1161                         return pos - buf;
1162                 pos += ret;
1163                 first = 0;
1164         }
1165
1166         if (capa->enc & WPA_DRIVER_CAPA_ENC_WEP40) {
1167                 ret = os_snprintf(pos, end - pos, "%sWEP40", first ? "" : " ");
1168                 if (ret < 0 || ret >= end - pos)
1169                         return pos - buf;
1170                 pos += ret;
1171                 first = 0;
1172         }
1173
1174         return pos - buf;
1175 }
1176
1177
1178 static int ctrl_iface_get_capability_key_mgmt(int res, char *strict,
1179                                               struct wpa_driver_capa *capa,
1180                                               char *buf, size_t buflen)
1181 {
1182         int ret;
1183         char *pos, *end;
1184         size_t len;
1185
1186         pos = buf;
1187         end = pos + buflen;
1188
1189         if (res < 0) {
1190                 if (strict)
1191                         return 0;
1192                 len = os_strlcpy(buf, "WPA-PSK WPA-EAP IEEE8021X WPA-NONE "
1193                                  "NONE", buflen);
1194                 if (len >= buflen)
1195                         return -1;
1196                 return len;
1197         }
1198
1199         ret = os_snprintf(pos, end - pos, "NONE IEEE8021X");
1200         if (ret < 0 || ret >= end - pos)
1201                 return pos - buf;
1202         pos += ret;
1203
1204         if (capa->key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1205                               WPA_DRIVER_CAPA_KEY_MGMT_WPA2)) {
1206                 ret = os_snprintf(pos, end - pos, " WPA-EAP");
1207                 if (ret < 0 || ret >= end - pos)
1208                         return pos - buf;
1209                 pos += ret;
1210         }
1211
1212         if (capa->key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1213                               WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
1214                 ret = os_snprintf(pos, end - pos, " WPA-PSK");
1215                 if (ret < 0 || ret >= end - pos)
1216                         return pos - buf;
1217                 pos += ret;
1218         }
1219
1220         if (capa->key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA_NONE) {
1221                 ret = os_snprintf(pos, end - pos, " WPA-NONE");
1222                 if (ret < 0 || ret >= end - pos)
1223                         return pos - buf;
1224                 pos += ret;
1225         }
1226
1227         return pos - buf;
1228 }
1229
1230
1231 static int ctrl_iface_get_capability_proto(int res, char *strict,
1232                                            struct wpa_driver_capa *capa,
1233                                            char *buf, size_t buflen)
1234 {
1235         int ret, first = 1;
1236         char *pos, *end;
1237         size_t len;
1238
1239         pos = buf;
1240         end = pos + buflen;
1241
1242         if (res < 0) {
1243                 if (strict)
1244                         return 0;
1245                 len = os_strlcpy(buf, "RSN WPA", buflen);
1246                 if (len >= buflen)
1247                         return -1;
1248                 return len;
1249         }
1250
1251         if (capa->key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1252                               WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
1253                 ret = os_snprintf(pos, end - pos, "%sRSN", first ? "" : " ");
1254                 if (ret < 0 || ret >= end - pos)
1255                         return pos - buf;
1256                 pos += ret;
1257                 first = 0;
1258         }
1259
1260         if (capa->key_mgmt & (WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1261                               WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK)) {
1262                 ret = os_snprintf(pos, end - pos, "%sWPA", first ? "" : " ");
1263                 if (ret < 0 || ret >= end - pos)
1264                         return pos - buf;
1265                 pos += ret;
1266                 first = 0;
1267         }
1268
1269         return pos - buf;
1270 }
1271
1272
1273 static int ctrl_iface_get_capability_auth_alg(int res, char *strict,
1274                                               struct wpa_driver_capa *capa,
1275                                               char *buf, size_t buflen)
1276 {
1277         int ret, first = 1;
1278         char *pos, *end;
1279         size_t len;
1280
1281         pos = buf;
1282         end = pos + buflen;
1283
1284         if (res < 0) {
1285                 if (strict)
1286                         return 0;
1287                 len = os_strlcpy(buf, "OPEN SHARED LEAP", buflen);
1288                 if (len >= buflen)
1289                         return -1;
1290                 return len;
1291         }
1292
1293         if (capa->auth & (WPA_DRIVER_AUTH_OPEN)) {
1294                 ret = os_snprintf(pos, end - pos, "%sOPEN", first ? "" : " ");
1295                 if (ret < 0 || ret >= end - pos)
1296                         return pos - buf;
1297                 pos += ret;
1298                 first = 0;
1299         }
1300
1301         if (capa->auth & (WPA_DRIVER_AUTH_SHARED)) {
1302                 ret = os_snprintf(pos, end - pos, "%sSHARED",
1303                                   first ? "" : " ");
1304                 if (ret < 0 || ret >= end - pos)
1305                         return pos - buf;
1306                 pos += ret;
1307                 first = 0;
1308         }
1309
1310         if (capa->auth & (WPA_DRIVER_AUTH_LEAP)) {
1311                 ret = os_snprintf(pos, end - pos, "%sLEAP", first ? "" : " ");
1312                 if (ret < 0 || ret >= end - pos)
1313                         return pos - buf;
1314                 pos += ret;
1315                 first = 0;
1316         }
1317
1318         return pos - buf;
1319 }
1320
1321
1322 static int wpa_supplicant_ctrl_iface_get_capability(
1323         struct wpa_supplicant *wpa_s, const char *_field, char *buf,
1324         size_t buflen)
1325 {
1326         struct wpa_driver_capa capa;
1327         int res;
1328         char *strict;
1329         char field[30];
1330         size_t len;
1331
1332         /* Determine whether or not strict checking was requested */
1333         len = os_strlcpy(field, _field, sizeof(field));
1334         if (len >= sizeof(field))
1335                 return -1;
1336         strict = os_strchr(field, ' ');
1337         if (strict != NULL) {
1338                 *strict++ = '\0';
1339                 if (os_strcmp(strict, "strict") != 0)
1340                         return -1;
1341         }
1342
1343         wpa_printf(MSG_DEBUG, "CTRL_IFACE: GET_CAPABILITY '%s' %s",
1344                 field, strict ? strict : "");
1345
1346         if (os_strcmp(field, "eap") == 0) {
1347                 return eap_get_names(buf, buflen);
1348         }
1349
1350         res = wpa_drv_get_capa(wpa_s, &capa);
1351
1352         if (os_strcmp(field, "pairwise") == 0)
1353                 return ctrl_iface_get_capability_pairwise(res, strict, &capa,
1354                                                           buf, buflen);
1355
1356         if (os_strcmp(field, "group") == 0)
1357                 return ctrl_iface_get_capability_group(res, strict, &capa,
1358                                                        buf, buflen);
1359
1360         if (os_strcmp(field, "key_mgmt") == 0)
1361                 return ctrl_iface_get_capability_key_mgmt(res, strict, &capa,
1362                                                           buf, buflen);
1363
1364         if (os_strcmp(field, "proto") == 0)
1365                 return ctrl_iface_get_capability_proto(res, strict, &capa,
1366                                                        buf, buflen);
1367
1368         if (os_strcmp(field, "auth_alg") == 0)
1369                 return ctrl_iface_get_capability_auth_alg(res, strict, &capa,
1370                                                           buf, buflen);
1371
1372         wpa_printf(MSG_DEBUG, "CTRL_IFACE: Unknown GET_CAPABILITY field '%s'",
1373                    field);
1374
1375         return -1;
1376 }
1377
1378
1379 static int wpa_supplicant_ctrl_iface_bss(struct wpa_supplicant *wpa_s,
1380                                          const char *cmd, char *buf,
1381                                          size_t buflen)
1382 {
1383         u8 bssid[ETH_ALEN];
1384         size_t i;
1385         struct wpa_scan_results *results;
1386         struct wpa_scan_res *bss;
1387         int ret;
1388         char *pos, *end;
1389         const u8 *ie, *ie2;
1390
1391         if (wpa_s->scan_res == NULL &&
1392             wpa_supplicant_get_scan_results(wpa_s) < 0)
1393                 return 0;
1394
1395         results = wpa_s->scan_res;
1396         if (results == NULL)
1397                 return 0;
1398
1399         if (hwaddr_aton(cmd, bssid) == 0) {
1400                 for (i = 0; i < results->num; i++) {
1401                         if (os_memcmp(bssid, results->res[i]->bssid, ETH_ALEN)
1402                             == 0)
1403                                 break;
1404                 }
1405         } else
1406                 i = atoi(cmd);
1407
1408         if (i >= results->num || results->res[i] == NULL)
1409                 return 0; /* no match found */
1410
1411         bss = results->res[i];
1412         pos = buf;
1413         end = buf + buflen;
1414         ret = os_snprintf(pos, end - pos,
1415                           "bssid=" MACSTR "\n"
1416                           "freq=%d\n"
1417                           "beacon_int=%d\n"
1418                           "capabilities=0x%04x\n"
1419                           "qual=%d\n"
1420                           "noise=%d\n"
1421                           "level=%d\n"
1422                           "tsf=%016llu\n"
1423                           "ie=",
1424                           MAC2STR(bss->bssid), bss->freq, bss->beacon_int,
1425                           bss->caps, bss->qual, bss->noise, bss->level,
1426                           (unsigned long long) bss->tsf);
1427         if (ret < 0 || ret >= end - pos)
1428                 return pos - buf;
1429         pos += ret;
1430
1431         ie = (const u8 *) (bss + 1);
1432         for (i = 0; i < bss->ie_len; i++) {
1433                 ret = os_snprintf(pos, end - pos, "%02x", *ie++);
1434                 if (ret < 0 || ret >= end - pos)
1435                         return pos - buf;
1436                 pos += ret;
1437         }
1438
1439         ret = os_snprintf(pos, end - pos, "\n");
1440         if (ret < 0 || ret >= end - pos)
1441                 return pos - buf;
1442         pos += ret;
1443
1444         ret = os_snprintf(pos, end - pos, "flags=");
1445         if (ret < 0 || ret >= end - pos)
1446                 return pos - buf;
1447         pos += ret;
1448
1449         ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
1450         if (ie)
1451                 pos = wpa_supplicant_ie_txt(pos, end, "WPA", ie, 2 + ie[1]);
1452         ie2 = wpa_scan_get_ie(bss, WLAN_EID_RSN);
1453         if (ie2)
1454                 pos = wpa_supplicant_ie_txt(pos, end, "WPA2", ie2, 2 + ie2[1]);
1455         pos = wpa_supplicant_wps_ie_txt(pos, end, bss);
1456         if (!ie && !ie2 && bss->caps & IEEE80211_CAP_PRIVACY) {
1457                 ret = os_snprintf(pos, end - pos, "[WEP]");
1458                 if (ret < 0 || ret >= end - pos)
1459                         return pos - buf;
1460                 pos += ret;
1461         }
1462         if (bss->caps & IEEE80211_CAP_IBSS) {
1463                 ret = os_snprintf(pos, end - pos, "[IBSS]");
1464                 if (ret < 0 || ret >= end - pos)
1465                         return pos - buf;
1466                 pos += ret;
1467         }
1468
1469         ret = os_snprintf(pos, end - pos, "\n");
1470         if (ret < 0 || ret >= end - pos)
1471                 return pos - buf;
1472         pos += ret;
1473
1474         ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
1475         ret = os_snprintf(pos, end - pos, "ssid=%s\n",
1476                           ie ? wpa_ssid_txt(ie + 2, ie[1]) : "");
1477         if (ret < 0 || ret >= end - pos)
1478                 return pos - buf;
1479         pos += ret;
1480
1481         return pos - buf;
1482 }
1483
1484
1485 static int wpa_supplicant_ctrl_iface_ap_scan(
1486         struct wpa_supplicant *wpa_s, char *cmd)
1487 {
1488         int ap_scan = atoi(cmd);
1489
1490         if (ap_scan < 0 || ap_scan > 2)
1491                 return -1;
1492         wpa_s->conf->ap_scan = ap_scan;
1493         return 0;
1494 }
1495
1496
1497 char * wpa_supplicant_ctrl_iface_process(struct wpa_supplicant *wpa_s,
1498                                          char *buf, size_t *resp_len)
1499 {
1500         char *reply;
1501         const int reply_size = 2048;
1502         int ctrl_rsp = 0;
1503         int reply_len;
1504
1505         if (os_strncmp(buf, WPA_CTRL_RSP, os_strlen(WPA_CTRL_RSP)) == 0 ||
1506             os_strncmp(buf, "SET_NETWORK ", 12) == 0) {
1507                 wpa_hexdump_ascii_key(MSG_DEBUG, "RX ctrl_iface",
1508                                       (const u8 *) buf, os_strlen(buf));
1509         } else {
1510                 wpa_hexdump_ascii(MSG_DEBUG, "RX ctrl_iface",
1511                                   (const u8 *) buf, os_strlen(buf));
1512         }
1513
1514         reply = os_malloc(reply_size);
1515         if (reply == NULL) {
1516                 *resp_len = 1;
1517                 return NULL;
1518         }
1519
1520         os_memcpy(reply, "OK\n", 3);
1521         reply_len = 3;
1522
1523         if (os_strcmp(buf, "PING") == 0) {
1524                 os_memcpy(reply, "PONG\n", 5);
1525                 reply_len = 5;
1526         } else if (os_strcmp(buf, "MIB") == 0) {
1527                 reply_len = wpa_sm_get_mib(wpa_s->wpa, reply, reply_size);
1528                 if (reply_len >= 0) {
1529                         int res;
1530                         res = eapol_sm_get_mib(wpa_s->eapol, reply + reply_len,
1531                                                reply_size - reply_len);
1532                         if (res < 0)
1533                                 reply_len = -1;
1534                         else
1535                                 reply_len += res;
1536                 }
1537         } else if (os_strncmp(buf, "STATUS", 6) == 0) {
1538                 reply_len = wpa_supplicant_ctrl_iface_status(
1539                         wpa_s, buf + 6, reply, reply_size);
1540         } else if (os_strcmp(buf, "PMKSA") == 0) {
1541                 reply_len = wpa_sm_pmksa_cache_list(wpa_s->wpa, reply,
1542                                                     reply_size);
1543         } else if (os_strncmp(buf, "SET ", 4) == 0) {
1544                 if (wpa_supplicant_ctrl_iface_set(wpa_s, buf + 4))
1545                         reply_len = -1;
1546         } else if (os_strcmp(buf, "LOGON") == 0) {
1547                 eapol_sm_notify_logoff(wpa_s->eapol, FALSE);
1548         } else if (os_strcmp(buf, "LOGOFF") == 0) {
1549                 eapol_sm_notify_logoff(wpa_s->eapol, TRUE);
1550         } else if (os_strcmp(buf, "REASSOCIATE") == 0) {
1551                 wpa_s->disconnected = 0;
1552                 wpa_s->reassociate = 1;
1553                 wpa_supplicant_req_scan(wpa_s, 0, 0);
1554         } else if (os_strcmp(buf, "RECONNECT") == 0) {
1555                 if (wpa_s->disconnected) {
1556                         wpa_s->disconnected = 0;
1557                         wpa_s->reassociate = 1;
1558                         wpa_supplicant_req_scan(wpa_s, 0, 0);
1559                 }
1560 #ifdef IEEE8021X_EAPOL
1561         } else if (os_strncmp(buf, "PREAUTH ", 8) == 0) {
1562                 if (wpa_supplicant_ctrl_iface_preauth(wpa_s, buf + 8))
1563                         reply_len = -1;
1564 #endif /* IEEE8021X_EAPOL */
1565 #ifdef CONFIG_PEERKEY
1566         } else if (os_strncmp(buf, "STKSTART ", 9) == 0) {
1567                 if (wpa_supplicant_ctrl_iface_stkstart(wpa_s, buf + 9))
1568                         reply_len = -1;
1569 #endif /* CONFIG_PEERKEY */
1570 #ifdef CONFIG_IEEE80211R
1571         } else if (os_strncmp(buf, "FT_DS ", 6) == 0) {
1572                 if (wpa_supplicant_ctrl_iface_ft_ds(wpa_s, buf + 6))
1573                         reply_len = -1;
1574 #endif /* CONFIG_IEEE80211R */
1575 #ifdef CONFIG_WPS
1576         } else if (os_strcmp(buf, "WPS_PBC") == 0) {
1577                 if (wpa_supplicant_ctrl_iface_wps_pbc(wpa_s, NULL))
1578                         reply_len = -1;
1579         } else if (os_strncmp(buf, "WPS_PBC ", 8) == 0) {
1580                 if (wpa_supplicant_ctrl_iface_wps_pbc(wpa_s, buf + 8))
1581                         reply_len = -1;
1582         } else if (os_strncmp(buf, "WPS_PIN ", 8) == 0) {
1583                 reply_len = wpa_supplicant_ctrl_iface_wps_pin(wpa_s, buf + 8,
1584                                                               reply,
1585                                                               reply_size);
1586         } else if (os_strncmp(buf, "WPS_REG ", 8) == 0) {
1587                 if (wpa_supplicant_ctrl_iface_wps_reg(wpa_s, buf + 8))
1588                         reply_len = -1;
1589 #endif /* CONFIG_WPS */
1590 #ifdef CONFIG_IBSS_RSN
1591         } else if (os_strncmp(buf, "IBSS_RSN ", 9) == 0) {
1592                 if (wpa_supplicant_ctrl_iface_ibss_rsn(wpa_s, buf + 9))
1593                         reply_len = -1;
1594 #endif /* CONFIG_IBSS_RSN */
1595         } else if (os_strncmp(buf, WPA_CTRL_RSP, os_strlen(WPA_CTRL_RSP)) == 0)
1596         {
1597                 if (wpa_supplicant_ctrl_iface_ctrl_rsp(
1598                             wpa_s, buf + os_strlen(WPA_CTRL_RSP)))
1599                         reply_len = -1;
1600                 else
1601                         ctrl_rsp = 1;
1602         } else if (os_strcmp(buf, "RECONFIGURE") == 0) {
1603                 if (wpa_supplicant_reload_configuration(wpa_s))
1604                         reply_len = -1;
1605         } else if (os_strcmp(buf, "TERMINATE") == 0) {
1606                 eloop_terminate();
1607         } else if (os_strncmp(buf, "BSSID ", 6) == 0) {
1608                 if (wpa_supplicant_ctrl_iface_bssid(wpa_s, buf + 6))
1609                         reply_len = -1;
1610         } else if (os_strcmp(buf, "LIST_NETWORKS") == 0) {
1611                 reply_len = wpa_supplicant_ctrl_iface_list_networks(
1612                         wpa_s, reply, reply_size);
1613         } else if (os_strcmp(buf, "DISCONNECT") == 0) {
1614                 wpa_s->reassociate = 0;
1615                 wpa_s->disconnected = 1;
1616                 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1617         } else if (os_strcmp(buf, "SCAN") == 0) {
1618                 wpa_s->scan_req = 2;
1619                 wpa_supplicant_req_scan(wpa_s, 0, 0);
1620         } else if (os_strcmp(buf, "SCAN_RESULTS") == 0) {
1621                 reply_len = wpa_supplicant_ctrl_iface_scan_results(
1622                         wpa_s, reply, reply_size);
1623         } else if (os_strncmp(buf, "SELECT_NETWORK ", 15) == 0) {
1624                 if (wpa_supplicant_ctrl_iface_select_network(wpa_s, buf + 15))
1625                         reply_len = -1;
1626         } else if (os_strncmp(buf, "ENABLE_NETWORK ", 15) == 0) {
1627                 if (wpa_supplicant_ctrl_iface_enable_network(wpa_s, buf + 15))
1628                         reply_len = -1;
1629         } else if (os_strncmp(buf, "DISABLE_NETWORK ", 16) == 0) {
1630                 if (wpa_supplicant_ctrl_iface_disable_network(wpa_s, buf + 16))
1631                         reply_len = -1;
1632         } else if (os_strcmp(buf, "ADD_NETWORK") == 0) {
1633                 reply_len = wpa_supplicant_ctrl_iface_add_network(
1634                         wpa_s, reply, reply_size);
1635         } else if (os_strncmp(buf, "REMOVE_NETWORK ", 15) == 0) {
1636                 if (wpa_supplicant_ctrl_iface_remove_network(wpa_s, buf + 15))
1637                         reply_len = -1;
1638         } else if (os_strncmp(buf, "SET_NETWORK ", 12) == 0) {
1639                 if (wpa_supplicant_ctrl_iface_set_network(wpa_s, buf + 12))
1640                         reply_len = -1;
1641         } else if (os_strncmp(buf, "GET_NETWORK ", 12) == 0) {
1642                 reply_len = wpa_supplicant_ctrl_iface_get_network(
1643                         wpa_s, buf + 12, reply, reply_size);
1644 #ifndef CONFIG_NO_CONFIG_WRITE
1645         } else if (os_strcmp(buf, "SAVE_CONFIG") == 0) {
1646                 if (wpa_supplicant_ctrl_iface_save_config(wpa_s))
1647                         reply_len = -1;
1648 #endif /* CONFIG_NO_CONFIG_WRITE */
1649         } else if (os_strncmp(buf, "GET_CAPABILITY ", 15) == 0) {
1650                 reply_len = wpa_supplicant_ctrl_iface_get_capability(
1651                         wpa_s, buf + 15, reply, reply_size);
1652         } else if (os_strncmp(buf, "AP_SCAN ", 8) == 0) {
1653                 if (wpa_supplicant_ctrl_iface_ap_scan(wpa_s, buf + 8))
1654                         reply_len = -1;
1655         } else if (os_strcmp(buf, "INTERFACE_LIST") == 0) {
1656                 reply_len = wpa_supplicant_global_iface_list(
1657                         wpa_s->global, reply, reply_size);
1658         } else if (os_strcmp(buf, "INTERFACES") == 0) {
1659                 reply_len = wpa_supplicant_global_iface_interfaces(
1660                         wpa_s->global, reply, reply_size);
1661         } else if (os_strncmp(buf, "BSS ", 4) == 0) {
1662                 reply_len = wpa_supplicant_ctrl_iface_bss(
1663                         wpa_s, buf + 4, reply, reply_size);
1664         } else {
1665                 os_memcpy(reply, "UNKNOWN COMMAND\n", 16);
1666                 reply_len = 16;
1667         }
1668
1669         if (reply_len < 0) {
1670                 os_memcpy(reply, "FAIL\n", 5);
1671                 reply_len = 5;
1672         }
1673
1674         if (ctrl_rsp)
1675                 eapol_sm_notify_ctrl_response(wpa_s->eapol);
1676
1677         *resp_len = reply_len;
1678         return reply;
1679 }
1680
1681
1682 static int wpa_supplicant_global_iface_add(struct wpa_global *global,
1683                                            char *cmd)
1684 {
1685         struct wpa_interface iface;
1686         char *pos;
1687
1688         /*
1689          * <ifname>TAB<confname>TAB<driver>TAB<ctrl_interface>TAB<driver_param>
1690          * TAB<bridge_ifname>
1691          */
1692         wpa_printf(MSG_DEBUG, "CTRL_IFACE GLOBAL INTERFACE_ADD '%s'", cmd);
1693
1694         os_memset(&iface, 0, sizeof(iface));
1695
1696         do {
1697                 iface.ifname = pos = cmd;
1698                 pos = os_strchr(pos, '\t');
1699                 if (pos)
1700                         *pos++ = '\0';
1701                 if (iface.ifname[0] == '\0')
1702                         return -1;
1703                 if (pos == NULL)
1704                         break;
1705
1706                 iface.confname = pos;
1707                 pos = os_strchr(pos, '\t');
1708                 if (pos)
1709                         *pos++ = '\0';
1710                 if (iface.confname[0] == '\0')
1711                         iface.confname = NULL;
1712                 if (pos == NULL)
1713                         break;
1714
1715                 iface.driver = pos;
1716                 pos = os_strchr(pos, '\t');
1717                 if (pos)
1718                         *pos++ = '\0';
1719                 if (iface.driver[0] == '\0')
1720                         iface.driver = NULL;
1721                 if (pos == NULL)
1722                         break;
1723
1724                 iface.ctrl_interface = pos;
1725                 pos = os_strchr(pos, '\t');
1726                 if (pos)
1727                         *pos++ = '\0';
1728                 if (iface.ctrl_interface[0] == '\0')
1729                         iface.ctrl_interface = NULL;
1730                 if (pos == NULL)
1731                         break;
1732
1733                 iface.driver_param = pos;
1734                 pos = os_strchr(pos, '\t');
1735                 if (pos)
1736                         *pos++ = '\0';
1737                 if (iface.driver_param[0] == '\0')
1738                         iface.driver_param = NULL;
1739                 if (pos == NULL)
1740                         break;
1741
1742                 iface.bridge_ifname = pos;
1743                 pos = os_strchr(pos, '\t');
1744                 if (pos)
1745                         *pos++ = '\0';
1746                 if (iface.bridge_ifname[0] == '\0')
1747                         iface.bridge_ifname = NULL;
1748                 if (pos == NULL)
1749                         break;
1750         } while (0);
1751
1752         if (wpa_supplicant_get_iface(global, iface.ifname))
1753                 return -1;
1754
1755         return wpa_supplicant_add_iface(global, &iface) ? 0 : -1;
1756 }
1757
1758
1759 static int wpa_supplicant_global_iface_remove(struct wpa_global *global,
1760                                               char *cmd)
1761 {
1762         struct wpa_supplicant *wpa_s;
1763
1764         wpa_printf(MSG_DEBUG, "CTRL_IFACE GLOBAL INTERFACE_REMOVE '%s'", cmd);
1765
1766         wpa_s = wpa_supplicant_get_iface(global, cmd);
1767         if (wpa_s == NULL)
1768                 return -1;
1769         return wpa_supplicant_remove_iface(global, wpa_s);
1770 }
1771
1772
1773 static void wpa_free_iface_info(struct wpa_interface_info *iface)
1774 {
1775         struct wpa_interface_info *prev;
1776
1777         while (iface) {
1778                 prev = iface;
1779                 iface = iface->next;
1780
1781                 os_free(prev->ifname);
1782                 os_free(prev->desc);
1783                 os_free(prev);
1784         }
1785 }
1786
1787
1788 static int wpa_supplicant_global_iface_list(struct wpa_global *global,
1789                                             char *buf, int len)
1790 {
1791         int i, res;
1792         struct wpa_interface_info *iface = NULL, *last = NULL, *tmp;
1793         char *pos, *end;
1794
1795         for (i = 0; wpa_supplicant_drivers[i]; i++) {
1796                 struct wpa_driver_ops *drv = wpa_supplicant_drivers[i];
1797                 if (drv->get_interfaces == NULL)
1798                         continue;
1799                 tmp = drv->get_interfaces(global->drv_priv);
1800                 if (tmp == NULL)
1801                         continue;
1802
1803                 if (last == NULL)
1804                         iface = last = tmp;
1805                 else
1806                         last->next = tmp;
1807                 while (last->next)
1808                         last = last->next;
1809         }
1810
1811         pos = buf;
1812         end = buf + len;
1813         for (tmp = iface; tmp; tmp = tmp->next) {
1814                 res = os_snprintf(pos, end - pos, "%s\t%s\t%s\n",
1815                                   tmp->drv_name, tmp->ifname,
1816                                   tmp->desc ? tmp->desc : "");
1817                 if (res < 0 || res >= end - pos) {
1818                         *pos = '\0';
1819                         break;
1820                 }
1821                 pos += res;
1822         }
1823
1824         wpa_free_iface_info(iface);
1825
1826         return pos - buf;
1827 }
1828
1829
1830 static int wpa_supplicant_global_iface_interfaces(struct wpa_global *global,
1831                                                   char *buf, int len)
1832 {
1833         int res;
1834         char *pos, *end;
1835         struct wpa_supplicant *wpa_s;
1836
1837         wpa_s = global->ifaces;
1838         pos = buf;
1839         end = buf + len;
1840
1841         while (wpa_s) {
1842                 res = os_snprintf(pos, end - pos, "%s\n", wpa_s->ifname);
1843                 if (res < 0 || res >= end - pos) {
1844                         *pos = '\0';
1845                         break;
1846                 }
1847                 pos += res;
1848                 wpa_s = wpa_s->next;
1849         }
1850         return pos - buf;
1851 }
1852
1853
1854 char * wpa_supplicant_global_ctrl_iface_process(struct wpa_global *global,
1855                                                 char *buf, size_t *resp_len)
1856 {
1857         char *reply;
1858         const int reply_size = 2048;
1859         int reply_len;
1860
1861         wpa_hexdump_ascii(MSG_DEBUG, "RX global ctrl_iface",
1862                           (const u8 *) buf, os_strlen(buf));
1863
1864         reply = os_malloc(reply_size);
1865         if (reply == NULL) {
1866                 *resp_len = 1;
1867                 return NULL;
1868         }
1869
1870         os_memcpy(reply, "OK\n", 3);
1871         reply_len = 3;
1872
1873         if (os_strcmp(buf, "PING") == 0) {
1874                 os_memcpy(reply, "PONG\n", 5);
1875                 reply_len = 5;
1876         } else if (os_strncmp(buf, "INTERFACE_ADD ", 14) == 0) {
1877                 if (wpa_supplicant_global_iface_add(global, buf + 14))
1878                         reply_len = -1;
1879         } else if (os_strncmp(buf, "INTERFACE_REMOVE ", 17) == 0) {
1880                 if (wpa_supplicant_global_iface_remove(global, buf + 17))
1881                         reply_len = -1;
1882         } else if (os_strcmp(buf, "INTERFACE_LIST") == 0) {
1883                 reply_len = wpa_supplicant_global_iface_list(
1884                         global, reply, reply_size);
1885         } else if (os_strcmp(buf, "INTERFACES") == 0) {
1886                 reply_len = wpa_supplicant_global_iface_interfaces(
1887                         global, reply, reply_size);
1888         } else if (os_strcmp(buf, "TERMINATE") == 0) {
1889                 eloop_terminate();
1890         } else {
1891                 os_memcpy(reply, "UNKNOWN COMMAND\n", 16);
1892                 reply_len = 16;
1893         }
1894
1895         if (reply_len < 0) {
1896                 os_memcpy(reply, "FAIL\n", 5);
1897                 reply_len = 5;
1898         }
1899
1900         *resp_len = reply_len;
1901         return reply;
1902 }